From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E6C7109C046 for ; Wed, 25 Mar 2026 16:53:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w5RSv-0004s4-NA; Wed, 25 Mar 2026 12:52:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w5RSr-0004rK-Q6 for qemu-devel@nongnu.org; Wed, 25 Mar 2026 12:52:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w5RSq-0008C3-8g for qemu-devel@nongnu.org; Wed, 25 Mar 2026 12:52:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1774457534; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=iNMRRkHa4c3eYsZdGmfsDfjxato3j8WQGZ/e92kqEyM=; b=Z9tR4ZQb7f/m1mXz329jOSoyCLlKUFQX74Q0xvacOeYAAb6ouG1ED1d/8XfTIoUHikPEo8 /sJuFRnhCXRHW2nwom0FeTlRpmGnCAuQgDdfqMjC7pRoIu9eecjtdJ2GgK78WJsUyz8t9k k2zA6F1NTykvDa5Cr3L2mDT8c38OdDQ= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-606-VcSTSriTP8qQ8ejSn1K2Rg-1; Wed, 25 Mar 2026 12:52:10 -0400 X-MC-Unique: VcSTSriTP8qQ8ejSn1K2Rg-1 X-Mimecast-MFC-AGG-ID: VcSTSriTP8qQ8ejSn1K2Rg_1774457529 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 1A7721944F01; Wed, 25 Mar 2026 16:52:08 +0000 (UTC) Received: from localhost (unknown [10.44.32.10]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id AC918300019F; Wed, 25 Mar 2026 16:52:06 +0000 (UTC) Date: Wed, 25 Mar 2026 12:52:04 -0400 From: Stefan Hajnoczi To: Jaehoon Kim Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, mjrosato@linux.ibm.com, farman@linux.ibm.com, pbonzini@redhat.com, fam@euphon.net, armbru@redhat.com, eblake@redhat.com, berrange@redhat.com, eduardo@habkost.net, dave@treblig.org, sw@weilnetz.de Subject: Re: [PATCH RFC v2 3/3] qapi/iothread: introduce poll-weight parameter for aio-poll Message-ID: <20260325165204.GA701300@fedora> References: <20260323135451.579655-1-jhkim@linux.ibm.com> <20260323135451.579655-4-jhkim@linux.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="3eV4ODSkzvFgOnfB" Content-Disposition: inline In-Reply-To: <20260323135451.579655-4-jhkim@linux.ibm.com> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --3eV4ODSkzvFgOnfB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 23, 2026 at 08:54:51AM -0500, Jaehoon Kim wrote: > diff --git a/qapi/misc.json b/qapi/misc.json > index 28c641fe2f..39d17010bc 100644 > --- a/qapi/misc.json > +++ b/qapi/misc.json > @@ -85,6 +85,12 @@ > # @poll-shrink: how many ns will be removed from polling time, 0 means > # that it's not configured (since 2.9) > # > +# @poll-weight: the weight factor for adaptive polling. > +# Determines how much the current event interval contributes to > +# the next polling time calculation. Valid values are 1 or > +# greater. 0 selects the system default value which is current 3 > +# (since 10.2) QEMU 11.0 is already in hard freeze, so this patch will go into 11.1: (since 11.1) > +# > # @aio-max-batch: maximum number of requests in a batch for the AIO > # engine, 0 means that the engine will use its default (since 6.1) > # > @@ -96,6 +102,7 @@ > 'poll-max-ns': 'int', > 'poll-grow': 'int', > 'poll-shrink': 'int', > + 'poll-weight': 'int', > 'aio-max-batch': 'int' } } > =20 > ## > diff --git a/qapi/qom.json b/qapi/qom.json > index c653248f85..feb80b6cfe 100644 > --- a/qapi/qom.json > +++ b/qapi/qom.json > @@ -606,6 +606,11 @@ > # algorithm detects it is spending too long polling without > # encountering events. 0 selects a default behaviour (default: 0) > # > +# @poll-weight: the weight factor for adaptive polling. > +# Determines how much the current event interval contributes to > +# the next polling time calculation. Valid values are 1 or > +# greater. If set to 0, the default value of 3 is used. (since 11.1) Other than that: Reviewed-by: Stefan Hajnoczi --3eV4ODSkzvFgOnfB Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmnEErQACgkQnKSrs4Gr c8ghTAf/dfb/2iLohXvqpK1NbMROUZSHyus5U0mTAinSVxZfRg4chTH0oOl7jWjN Hua2a1NHsTY1SrZujI0UANyMWq7ph2+7jAO0NLCQoRkKzXjqmEKdh3HueMYHbMIs bEXwDUmwJnAeXfocR6GWlfnXrKQEnoB8B+LEIVsoCcylY8R+I2FdmdbnJ54mtz1I Pohe/FWMTaAkv4/BKV5+TkCswECqsTt5lfCCeuGDpCgfcdsC2vreWymWSvRSiJ2T WNFskX8m2u7oKzOmL0X0+oCTegm95dC2/xjVvBb2m31Kd7zaif8KTGXLI2nxwvu9 6nquSHK2LdirYWg3m5rEV1uP/X53sw== =gOlD -----END PGP SIGNATURE----- --3eV4ODSkzvFgOnfB--